Question: What was located in Ulan-Ude on May 29, 1923?
Paraphrase: Tell me what was located in Ulan-Ude on May 29, 1923.
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q6816 p:P131 ?s . ?s ps:P131 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1923')) }